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Note on off-shell relations in nonlinear sigma model

Chen, Gang ; Du, Yijian LU ; Li, Shuyi and Liu, Hanqing (2015) In Journal of High Energy Physics
Abstract
In this note, we investigate relations between tree-level off-shell currents in nonlinear sigma model. Under Cayley parametrization, all odd-point currents vanish. We propose and prove a generalized U(1) identity for even-point currents. The off-shell U(1) identity given in [1] is a special case of the generalized identity studied in this note. The on-shell limit of this identity is equivalent with the on-shell KK relation. Thus this relation provides the full off-shell correspondence of tree-level KK relation in nonlinear sigma model.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Scattering Amplitudes, Sigma Models
in
Journal of High Energy Physics
issue
3
article number
156
publisher
Springer
external identifiers
  • wos:000351751300005
  • scopus:84961288461
ISSN
1029-8479
DOI
10.1007/JHEP03(2015)156
language
English
LU publication?
yes
id
6ba42b69-f9ba-442c-b357-545b6804cde8 (old id 5277882)
date added to LUP
2016-04-01 10:52:47
date last changed
2024-01-22 00:52:01
@article{6ba42b69-f9ba-442c-b357-545b6804cde8,
  abstract     = {{In this note, we investigate relations between tree-level off-shell currents in nonlinear sigma model. Under Cayley parametrization, all odd-point currents vanish. We propose and prove a generalized U(1) identity for even-point currents. The off-shell U(1) identity given in [1] is a special case of the generalized identity studied in this note. The on-shell limit of this identity is equivalent with the on-shell KK relation. Thus this relation provides the full off-shell correspondence of tree-level KK relation in nonlinear sigma model.}},
  author       = {{Chen, Gang and Du, Yijian and Li, Shuyi and Liu, Hanqing}},
  issn         = {{1029-8479}},
  keywords     = {{Scattering Amplitudes; Sigma Models}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Note on off-shell relations in nonlinear sigma model}},
  url          = {{http://dx.doi.org/10.1007/JHEP03(2015)156}},
  doi          = {{10.1007/JHEP03(2015)156}},
  year         = {{2015}},
}